1161980925 has 48 divisors (see below), whose sum is σ = 2211525120. Its totient is φ = 527336640.

The previous prime is 1161980917. The next prime is 1161980927. The reversal of 1161980925 is 5290891611.

It is not a de Polignac number, because 1161980925 - 2³ = 1161980917 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161980927) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 65014 + ... + 80936.

It is an arithmetic number, because the mean of its divisors is an integer number (46073440).

Almost surely, 2^1161980925 is an apocalyptic number.

1161980925 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1161980925 is a deficient number, since it is larger than the sum of its proper divisors (1049544195).

1161980925 is a wasteful number, since it uses less digits than its factorization.

1161980925 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16082 (or 16077 counting only the distinct ones).

The product of its (nonzero) digits is 38880, while the sum is 42.

The square root of 1161980925 is about 34087.8413074222. The cubic root of 1161980925 is about 1051.3153357170.

The spelling of 1161980925 in words is "one billion, one hundred sixty-one million, nine hundred eighty thousand, nine hundred twenty-five".